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목적: 인조혈관스텐트삽입술용 복부대동맥류 모델의 유용성을 평가하고자 한다. 대상과 방법: 모델은 심장과 복부대동맥류 부분으로 제작하여 실리콘 튜브로 연결하였고, 혈액은 37$^{\circ}C$의 물을 사용하였다. 심장은 수중펌프(80 L/분)와 솔레노이드 밸브로 혈관의 맥류를 발생시켰다. 대동맥류는 사각형의 틀에 지점토로 제작된 형상을 넣고 액상의 실리콘을 부어 건조시킨 후 지점토를 제거하였다. 수중펌프 출력부의 개통(100%, 50%, 25%)에 따른 흉부대동맥, 대동맥류, 장골동맥의 혈압(수축기/이완기)과 인조혈관스텐트삽입술을 시행하여(5예) 시술의 재현성과 시술 후의 압력을 측정하였다. 결과: 혈압은 수중펌프 출력부가 100% 개통의 경우, 흉부대동맥이 253/252 mmHg, 대동맥류가 271/162 mmHg, 장골동맥이 264/166 mmHg, 50%의 경우, 흉부대동맥이 173/121 mmHg, 대동맥류가 145/99 mmHg, 장골동맥이 145/106 mmHg, 25%의 경우, 흉부대동맥이 35/28mmHg, 대동맥류가 61/44 mmHg, 장골동맥이 24/22 mmHg이었다. 인조혈관스텐트는 모두 성공적으로 삽입되었고, 시술 후 혈압은 50% 개통의 경우, 흉부대동맥이 170/132 mmHg, 대동맥류가 174/128 mmHg, 장골동맥이 167/128 mmHg이었다. 결론: 본 모델은 시술의 재현이 쉽고, 혈압의 조절범위가 넓어 인조혈관스텐트의 체외실험 기구로 유용할 것으로 판단된다.3.8%)와 가역적인 혈관연축(vasospasm)이 2예(7.7%) 있었으며 그 밖에 시술 후 혈종(hematoma)형성 2예(7.7%), 일시적 손목 주위 신경학적 마비 1예(3.8%)등이었다. 결론: 요골동맥 천자를 통한 동맥화학색전술은 RHA카테터를 사용하여 가능하였으며, 고식적 방법으로 인한 지혈을 위한 절대 침상 안정의 단점을 보완할 수 있는 유용하고 안전한 방법으로 고려될 수 있을 것이다.',ABE = 'Purpose: To evaluate th\ulcornerfeasibility and usefulness of the transradial approach for intra-arterial chemoembolization therapy in patients with hepatocellular carcinomas. Materials and Methods: Twenty-nine patients with hepatocellular carcinoma who underwent intra-arterial chemoembolization via the radial artery approach were involved in this study. All underwent Allen’s test to check ulnar arterial patency. In all cases, we used the radial approach hepatic artery (RHA) catheter designed by ourselves, evaluating t\ulcorner selec\ulcorneron ability of the hepatic artery using an RHA cathter, the number of punctures, the procedure time, and compression time at the puncture site as well as complications occurring during and after the procedure. Results: Except for three in which puncture failure, brachial artery variation or hepatic artery variation occurred, all procedures were successful. The mean number of punctures was 3.5, and the average duration of the whole procedure was one and half hours. This gradually decreased as the nu\ulcornerer of procedures increased. The average duration at a compression of puncture site was 12 minutes. There were no major complications. Minor complications included minimal intimal dissection of the radial artery (3.8%), reversible vasospasm of the radial artery (7.7%), hematoma at a puncture site (7.7%) and transient neurologic deficit (3.8%). Conclusion: The transradial approach using an RHA catheter for intra-arterial chemoembolization therapy in patients with hepatocellular carcinoma\ulcornerwas techni\ulcornerlly feasible, with acceptable levels of safety. It may be a good alternative to absolute bed rest with a sand bag after the femoral approach.',PY = '2002-00-00',RF = '13',BN = ',CODEN = ',URI = ',URL = ',URC = ',DOI = ',ISDB = ',PNH = '유승훈;심형진;곽병국;김기현;이화연;송인섭;김양수',PNHNUM = '20040222678;20030129880;20030129876;19930326569;20030108354;20030130170;20030110057',ID = 'Liver neoplasm, chemotherapeutic infusion;Arteries, peripheral;Angiography, complications;Angiography, techn\ulcornerogy',modFlag = '1',inputType = '1',inputDate = to_char(sysdate, 'YYYY-MM-DD') WHERE articleMngnum = 'J1-0301-2867-0004600030-00229'
Purpose: To determine the efficacy of an abdominal aortic aneurysm model for stent-graft placement. Materials and Methods: The model consists of two parts, the eart and the vascular system. A peristaltic pump and a solenoid valve were used to simulate a pulsatile flow from the heart. A ball-shaped piece of clay was placed inside a square box and liquid silicone was poured. After the silicone was formed, the clay was removed and a silicone tube was used to connect the heart model and the aneurysm model. The silicone tube was also used to simulate the iliac arteries and one end of the artery was clamped and the other one was extended to a water bath. Water at 37$\^{C}$ was circulated through the model, and the pressure at the thoracic aorta, aneurysm and iliac artery was measured with the outlet valve opening at 25, 50, and 100% before and after stent-graft placement. Results: The liquid pressure measurements were 253/252, 271/162 and 264/166 mmHg at the thoracic aorta, aneurysm and iliac artery, respectively, when the outlet was 100% open. They were 173/121, 145/99, 145/106 mmHg when the outlet was 50% open, and 35/28, 61/44, 24/22 mmHg when it was 25% open. After lacement of the stent-graft, the pressure measurements were 170/132, 174/128, and 167/128 mmHg, respectively. Conclusion: Since it was easy to produce, the model was useful for in-vitro stent-graft testing, and a wide range of pressure could be applied.
Purpose: To determine the efficacy of an abdominal aortic aneurysm model for stent-graft placement. Materials and Methods: The model consists of two parts, the eart and the vascular system. A peristaltic pump and a solenoid valve were used to simulate a pulsatile flow from the heart. A ball-shaped piece of clay was placed inside a square box and liquid silicone was poured. After the silicone was formed, the clay was removed and a silicone tube was used to connect the heart model and the aneurysm model. The silicone tube was also used to simulate the iliac arteries and one end of the artery was clamped and the other one was extended to a water bath. Water at 37$\^{C}$ was circulated through the model, and the pressure at the thoracic aorta, aneurysm and iliac artery was measured with the outlet valve opening at 25, 50, and 100% before and after stent-graft placement. Results: The liquid pressure measurements were 253/252, 271/162 and 264/166 mmHg at the thoracic aorta, aneurysm and iliac artery, respectively, when the outlet was 100% open. They were 173/121, 145/99, 145/106 mmHg when the outlet was 50% open, and 35/28, 61/44, 24/22 mmHg when it was 25% open. After lacement of the stent-graft, the pressure measurements were 170/132, 174/128, and 167/128 mmHg, respectively. Conclusion: Since it was easy to produce, the model was useful for in-vitro stent-graft testing, and a wide range of pressure could be applied.
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